Episode "Threat of the Thormanoids", of the Science-fiction series "Space patrol", aired live on May 25, 1952.
Starring Ed Kemmer as "Commander Buzz Corry", Lyn Osborn as "Cadet Happy" and Lee van Cleef as "Loren", one of the Thormanoids. Directed by Dik Darley and written by Norman Jolley.
The player on this site doesn't seem to work properly.
However, once downloaded, the "Cinepack" file will play fine.